Avlis PnP, was heavily influence by the the various TSR/WotC Campaign settings of D&D. It has elements from Planescape, Spelljammer, and Forgotten Realms, along with its Home brew rules mixed to form the Core Avlis. Based on this, the Deathplanes of NWN Avlis, are the Outerplanes of based on Planescape. That means that when a person on Avlis dies, their soul goes to the Outerplane corresponding to their alignment in life. If someone was in the process of a change of heart, they would go to a "middle" plane between the Polarized planes. Such as Ysgard (CG/N) is in between Arborea (CG), and Limbo (CN). How the souls goes from Avlis to their final destination is hidden, and not really spelled out. However, you can piece together an idea.
My thoughts are like this.
When a person dies, their soul remains near their mortal body for a small period of time. The soul then hears the music of the "Harpinger" calling them to move on. Most heed this call, and follow the music through the passages ("Death Travel") to Dagath's Realm. Here, Dagath is like Kelemvor of Forgotten Realms. As the souls enter Dagath's area, they go from pure energy back to a Physical Form, called a Petitioner (from Planescape). Here the newly created Petitioner is judged by their Heart, and deeds on Avlis. Dagath, then sends those souls to the Realm of their Patron God, or to the Outer Plane corresponding to their alignment. The Harpinger helps in this process, moving those without Patron Gods to their Final places, and the Gods send an avatar to "fetch" their followers.
Each god would have their own realm on the Outerplane corresponding to their alignment. Dru'El's place on Arborea I would think, would be like a small section of T'Nanshi, with a sprawling city in the trees, and forest floor. Inhabitants would be Priests, Clerics, and Avengers, along with non-religious based followers who choose Dru'El as their Patron in life. I can also see Dru'El using Woodsy, his Divine Avian, to gather the souls from Dagath's realm to Dru'El's realm. Each of the gods of Avlis would have a similar process of bringing their followers to them. Once in the god's realm, the petitioner would then be subject to the god's wishes, wants, and desires.
But there is another step to Dagath, Rebirth. For some reason, once a soul reaches Dagath's realm, or to the realm of their patron god, it is deemed that the Soul of the Petitioner needs to go back to Avlis. This could be from Mortal friends/family casting Raise Dead or Resurrection spells, a strong want to return, the god kicking them out, or simply some unfinished business. At the point that the Soul is to be returned, the Harpinger again intercedes on Dagath's behalf.
The souls are brought back to Dagath, who then determines how they will reappear, and where they return back on the World of Avlis. In the case of adventurers, because of the nature of them, they are formed in a new body, at the age they were last at, with all their memories intact, and showing up at a local temple naked. For others, they maybe reincarnated as their former selves (like Adventurers), a completely new creature (as 2nd edition reincarnation), or the spirit is rebirth into a new body, being born again as a child, and not knowing its past lives.
That is my thoughts on the matter.
and of course are not Team endorsed in anyway. But I hope you liked reading them.
